Currently sitting in 10th place in the Premier League, Arsenal's only real shot at ending its four-year Champions League drought resides in the Europa League.
The Gunners will have to get past a familiar face in former manager and current Villarreal coach Unai Emery, who previously won three Europe League trophies with Sevilla. The Yellow Submarine has yet to lose in 12 Europa games (11 wins, one draw) under Emery since he took over last summer.
Villarreal has won each of its six Europa League home games this season but is coming off a weekend loss to Barcelona at the Estadio de la Cerámica.